What is CVE-2026-22257?

CVE-2026-22257 is a high-severity vulnerability in Salvo-rs Salvo, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-01-08.

How severe is CVE-2026-22257?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Salvo-rs Salvo

CVE-2026-22257

Salvo is a Rust web backend framework. Prior to version 0.88.1, the function list_html generates a file view of a folder without sanitizing the files or folders names, this may potentially lead to XSS in cases where a website allow the acc…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L.

Affected products

Salvo-rs Salvo — versions < 0.88.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/salvo-rs/salvo/security/advisories/GHSA-54m3-5fxr-2f3j (x_refsource_CONFIRM)
https://github.com/salvo-rs/salvo/blob/16efeba312a274739606ce76366d921768628654/crates/serve-static/src/dir.rs#L581 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-22257?: CVE-2026-22257 is a high-severity vulnerability in Salvo-rs Salvo, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-01-08.
How severe is CVE-2026-22257?: High severity. CVSS v3 base score is 8.8 out of 10.